Summer [II 47.2–68]

As soon as summer began the Peloponnesians and their allies, under the leadership of Archidamus, son of Zeuxidamus and king of the Spartans, invaded Attica with two-thirds of their forces just as they had done the year before. They established themselves and set about wasting the land. They had not been there many days when the plague first broke out among the Athenians, and although it is said to have struck in many places before, particularly at Lemnos but also elsewhere, there is no previous record anywhere of a pestilence so severe and so destructive to human life. The physicians were not able to help at its outset since they were treating it in ignorance, and indeed they themselves suffered the highest mortality since they were the ones most exposed to it. Nor were other human arts of any avail. Whatever supplications people made at sanctuaries and whatever oracles or the like they consulted, all were useless and in the end they abandoned them, defeated by the affliction.

It first came, so it is said, out of Ethiopia beyond Egypt, and then spread into Egypt and Libya and into most of the territory of the Persian King. When it got to Athens it struck the city suddenly, taking hold first in the Peiraeus, so that it was even suggested by the people there that the Peloponnesians had put poison in the rain-water tanks (there being no wells yet in the Peiraeus). Later on it reached the upper city too and then the mortality became much greater. I leave it to others – whether physicians or lay people – to speak from their own knowledge about it and say what its likely origins were and what factors could be powerful enough to generate such disruptive effects.